Machine for making precast blocks



' Dec.- 15,1942.

P. E. SCOTT MACHINE FOR MAKING PRE-CAST BLOCKS 4 Sheets-Sheet 1 Filed June 22. 1942 Z40; fljorr Dec. 15, 1942.

v P. E. sco'rT- MACHINE FOR MAKING-2am CAST BLOCKS Hale;

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INVENTOK 61 5607-7 Pea;

Dec. 15, 1942. P. E. SCOTT MACHINE FOR MAKING PRE-CAST BLOCKS Filed June 22, 1942 4 Sheets-Sheet 3 v 2 [fin-W702 541/1. 1 55077- 5 W 5 .Illlllllllfi ll Dec. 15, 1942.

P. E. sco-r 'r 2,305,112

MACHINE FOR 'IVIAKING PRE-CAST BLOCKS 4 Shepts-Sheet 4 Filed June 22,1942 I )kuz 4-. 5 1977- Patented Dec. 15, 1942 UNITED STATES PATENT OFFICE MACHINE FOR MAKING PREGAST BLOCKS Paul E. Scott, Chicago, Ill.

Application June 22, 1942, Serial No. 4148, 053

10 Claims.

My invention relates to improvements in machines for manufacturing pre-cast blocks.

My invention relates more specifically to improvements in a machine of the type described for manufacturing pre-cast blocks for catch basins, manholes and other sewer constructions as well as septic tanks, storm water inlets, underground vaults, telephone manholes and other underground constructions.

With particular reference to catch basins and sewer manholes of the type that are placed in a large number of city streets throughout the country, the standard type in the past has been a .cylindrical manhole or catch basin with a frustoconical or cone-shaped portion at the top coaxial with the catch basin or manhole. However, in the placing of some manholes or catch basins, this type of construction is not possible in that the retaining wall or other impediment will require the placing of the manhole eccentric of the catch basin or directly at one side thereof, requiring the building up of an eccentric cone on the upper part of the catch basin or manhole. While this has been accomplished in the past with common brick, it is an expensive and comparatively slow process. The building of the average manhole of this type by skilled brick layers requires an average of one day to com plete such an eccentric cone when built up of brick.

Consequently, it is desired to provide a means for effecting this same structure at a much cheaper cost and in a much shorter time.

An object of the invention is to provide an improved machine for manufacturing this particular pre-cast block.

A further object of the invention is to provide such a machine capable of adjustment to make any one of the different size pre-cast blocks required, which adjustment is exceedingly simple and can be made in a minimum of time.

A further object of the invention is to provide in a machine of the type described readily accessible means for effecting a change from one size mold to another.

A further object of the invention is to provide manually operated means for quickly and easily removing the four separate sides of the mold 'or forming mechanism so that the pre-cast a machine of the type described that is easily and simply constructed, yet strong and ruggedly built so that it will not easily become broken or out of order.

Other objects and advantages will be more ap parent from the following description wherein reference is bad to the accompanying four sheets 7 of drawings, upon which:

Fig. 2 is a side elevational View of a catch basin provided with an eccentric cone top so that it may be; positioned directly against the retain ing Wall of a building or at the curb in a paved street;

Fig. 3 is a plan view thereof;

Fig. 4 is a vertical sectional View taken on the" line 4-4 of Fig. 3;

Fig. 5 is a plan view of the first ring of f re-- cast blocks looking down from the top of the catch basin v Fi 6 is a sectional view taken on the lines 6-6 of Fig. 4 and shows the second layer of block's; N

Fig. 7 is a similar view taken on the line 1-"| of Fig. 4 and shows the third layer of blocke;

Fig. 8 is a similar sectional view taken on the lines 8--8'of Fig. 4 and shows the fourth ring of blocks which make up the eccentric cone;

Fig. 9 is a plan View of my improved machine for making the blocks shown in Figs. to- 8;

Fig. 10' is a fragmentary vertical sectional view on the line |0l 0 of Fig.- 9;

Fig. 11 is a side elevational view of my im-' proved machine;

Fig. 12 is a fragmentary sectionalview taken generally on the lines IZ-l 2 of Fig. 9 with parts broken in section to more clearly show other r Fig. 13 is a front elevational view of the machine; v k V I Fig. 14 is a perspective view of oneof the side blocks of the form or mold;

side block;

Fig. 16 is a perspective view of one or the side plates of the mold, and

Fig. 17 is a similar perspective view of the opposite side plate of the mold. I

Referring first to Figs. 1 to 8 inclusive", the manhole or catch basin may be provided with a base Iii and a plurality of rings [2 of similarly shaped blocks I4 built up to a desired height to form a" cylindrical well or chamber. In order to provide the eccentric cone with the manhole opening I6 adjacent the side Wall of the mafihole, I provide a pluranty of rings It; 20, '22 and 24 ofpreca'st blocks B of the type shown in Fig. 1'.

The first ring l8, shown in Fig. 5, is constructe ed of eight interconnecting blocks B which have clusive, shown in Fig. 8, constitute the fourth ring 24 of the eccentric.

With the blocks thus numbered, it can be seen that common labor can be employed to place these blocks in their proper position, and it has also been found that an eccentric cone may be constructed in this manner in about thirty minutes.

. Referring now to the machine with which these blocks are constructed, and referring first to the forms which are employed, I provide the end blocks 26 and 28 and the side walls 38 and 32. To construct the thirty-two blocks shown in Figs. 1 to 8, sixteen different size end blocks 26 and 28 are required, and thirty-two different size side walls 30 and 32. The side and end walls are assembled together as shown in Fig. 9 by extending the edges of the side wall 30 into the slots 34 and 36 of the side blocks, extending one end of the wall 32 into the slot 38, and extending a bolt 40 through the lugs 32a. of the side wall 32 and the locks 28a of the end block 28. Each of the blocks 26 and 28 are provided with a pin 42 which is positioned in one of the locating openings 44 and 46 of the side frame members 48 and 50.

The side frame members 48 and 50 of the form mechanism may be pivoted as shown upon a rod 52 that is carried by an arm 54, The arm 54 may be carried upon a bolt 56 which passes through a pair of side plates 58 secured to a vertically positioned rod 60. The rod 68 may be moved up and down in a tubular member 62 and fastened in a desired position by a cap member 64.

The tubular member 62 may be held in position by a pair of angle members 66 and 68 connected to the vertical frame members I8 and I2. I provide a pair of horizontal tracks I4 and 16 upon opposite sides of the machine. These tracks may be supported at their forward end by angle members 18 and 80 secured thereto by riveting, welding or otherwise. I provide a wheeled carriage 82 adapted to ride back and forth upon the rails I4 and I6. The carriage may comprise a channel shaped member 84 which carries a plurality of brackets 86 secured to the sides thereof. Each of the brackets 86 carries a roller 88 which rides upon the rails 14 and 16.

The carriage may be provided with a pair of upright brackets 90 upon opposite sides thereof to pivotally support a table 92. The table 92 has a pair of downwardly extending arms 94 pivotally mounted upon suitable bolt members 96 secured in the upper ends of uprights. 90. The table 92 may be constructed of a pair of angle irons 98 which extend between the members 94 and are secured thereto. A pair of plates I80 resting upon the angle irons, support a wooden pallet P upon which the material for casting the block is poured. In order for the pallet supporting table 92 to be parallel to the side frames 48 and 50, I connect a tube I02 thereto adapted to slidably receive a rod I84 connected'to the pivot 52 of the arm 54.

In order to align the form composed of the end and side walls previously described, I provide a bracket I06 on the back of side plate 39 and connect the same to a housing I88 adapted to receive a guiding rod H5 which is aligned with the bracket 54. The rod III), as shown in Fig. 12, is slidably received \Within the housing I88.

During a block molding operation, the side frames 48 and 56 may be connected together between eye bolt H2 fastened to the side frame 48 and the eye member H4 fastened to the side frame 56. A turnbuckle H6 is provided to tighten the form in the frame if desired.

When it is desired to remove a cast block from the form, the eye bolt II2 is released from the eye H4, and the lever II8 is pulled forward.

The lever H8 is connected by a pair of link members i2ii to the arm 54, and at its lower end to a pair of links I22. The links I22 (see Fig. 10) are pivotally connected to a collar I24 that surrounds the housing Hi8 and is fastened thereto by a set screw I26. In order to move the frame members 48 and 50 apart, the second set of links are connected to the pivots I23 and I25. These links, I28 and I35, are pivotally connected to the side frames 48 and at so that when pulling for- Ward on the lever II8, the housing I98 is moved back, guided on the bar III]. The housing I08 will carry with it the back plate 38, the end form blocks 34 and 36 will be swung outwardly, and as soon as a front plate 32 disengages from the slot 38, it will be swung outwardly on the bolt 49,

thus leaving the block that has been formed and removing all of the side walls away from the block. The pallet P may then be lifted from the machine and the block placed in a suitable drying location.

From the above and foregoing description, it

will be apparent to those skilled in the art that I,

have provided not only an improved block for building eccentric cones or blocks from which eccentric cones can be formed, but also a ma-,

chine which is easily adjustable to make any one of the thirty-two blocks required in the cone which I have described. It will of course be obvious that a greater number of openings 44 and 46 may be provided together with end blocks and side walls so that a larger number of different size blocks may be formed on this same machine.

One of the additional advantages of the machine is the provision of the entire form mechanism connected to the slidable rod 65 so that the ;same can be raised and the opening of the form placed in a more convenient position for puddling or camping the material in the form. When the bracket 58 is raised, the pallet table and the form mechanism will be tilted in unison ate the desired angle best suited for work on the cific embodiment of the invention, it will be apparent to those skilled in the art that changes and modifications may be made in the exact details shown, and I do not wish to be limited in any particular; rather what I desire to secure and protect by Letters Patent of the United States is:

l. A machine for forming pre-cast blocks of a variety of sizes and shapes, comprising a base having spaced parallel horizontal rails, a wheeled carriage adapted to ride back and forth on said rails, a pallet supportingtable pivotally mounted blocks of a 7 6. A machine for forming pro-cast blocks of a variety of sizes and shapes, comprising a base having spaced parallel horizontal rails, a wheeled having spaced parallel horizontal rails, a wheeled V carriage adapted to ride back forth on said rails, a pallet supporting table pivot-ally mounted on said carriage and a form mechan. to overlie said pallet supporting table, said mechanism comprising a pair of pivoted side frames forming a V, means for raising and lowering the forward end of said form mechanism to tilt the same to a desired angle, a row of holes in the vertical wall of each side frame, end form blocks held in position by pins extending into said holes and side form plates adapted to interlock in spaced relation on said end blocks on said side frames for locking the same together.

3. A machine for forming pre-cast blocks of a variety of sizes and shapes, comprising a base having spaced parallel horizontal rails, a wheeled carriage adapted to ride back and forth on said rails, a pallet supporting table pivotally mounted on said carriage and a form mechanism adapted to overlie said pallet supporting table, said mechadapted carriage adapted to ride back and forth on said rails, a pallet supporting table pivotally mounted on said carriage and a form mechanism adapted to overlie said pallet supporting table, said mechanism comprising a pair of pivoted side frames forming a V, a row of holes in the vertical wall of each side frame, interchangeable end form blocks held in position by pins extending into said holes and interchangeable side form plates adapted to interlock in spaced relation on said end blocks, means on said side frames for locking 5 the same together, and manually operated means for separating said form blocks and plates after a block-forming operation, said means including a pivoted lever arrangement for spreading the pivoted side frames, moving the end form. blocks outwardly and the side plates away from the formed block.

7. A machine for forming pre-cast blocks comprising a base having spaced parallel horizontal anism comprising a pair of pivoted side frames forming a V, means for raising and lowering the forward end of said form mechanism to tilt the same to a desired angle, a row of holes in the vertical wall of each side frame, end form blocks held in position by pins extending into said holes and side form plates adapted to interlock in spaced relation on said end blocks, and means on said side frames for locking the same together, said means including a connecting hook and eye member and a turnbuckle on said hook member.

4. A machine for forming pre-cast blocks of a variety of sizes and shapes, comprising a base having spaced parallel horizontal rails, a Wheeled carriage adapted to ride back and forth on said rails, a pallet supporting table pivotally mounted on said carriage and a form mechanism adapted to overlie said pallet supporting table, said mechanism comprising a pair of pivoted side frames forming a V, a row of holes in the vertical wall of each side frame, interchangeable end form blocks held in position by pins extending into said holes and interchangeable side form plates adapted to interlock in spaced relation on said end blocks, and means on said side frames for locking the same together.

5. A machine for forming pre-cast blocks of a variety of sizes and shapes, comprising a, base having spaced parallel horizontal rails, a wheeled carriage adapted to ride back and forth on said rails, a pallet supporting table pivotally mounted on said carriage and a form mechanism adapted to overlie said pallet supporting table, said mechanism comprising a pair of pivoted side frames forming a V, a row of holes in the vertical wall of each side frame, interchangeable end form blocks held in position by pins extending into said holes and interchangeable side form plates adapted to interlock in spaced relation on said end blocks, means on said side frames for locking the same together, and manually operated means for separating said form blocks and plates after a block-forming operation.

rails, a wheeled carriage adapted to ride back I and forth on said rails, a pallet supporting table pivotally mounted on said carriage and a form mechanism adapted to overlie said pallet supporting table, said mechanism comprising a pair of pivoted side frames extending radially from the pivot, a row of holes in the vertical wall of each side frame for different size blocks, end form blocks held in position by pins extending into their proper holes and side form plates adapted to interlock in spaced relation on said end blocks and means on said side frames for locking the same together,

8. A machine for forming pro-cast blocks of a variety of sizes and shapes, comprising a base having spaced parallel horizontal rails, a wheeled carriage adapted to ride back and forth on said rails, a pallet supporting table pivotally mounted on said carriage and a form mechanism 7 adapted to overlie said pallet supporting table,

said mechanism comprising a pair of pivoted side frames forming a V, and means on said mechanism for holding a form of desired size thereon.

9. A machine for forming pre-cast blocks of a variety of sizes and shapes, comprising a. base having spaced parallel horizontal rails, a wheeled carriage adapted to ride back and forth on said rails, a pallet supporting table pivotally mounted on said carriage and a form mechanism adapted to overlie said pallet supporting table, said mechanism comprising a pair of pivoted side frames forming a V, and means on said mechanism for holding a form of desired size thereon, said form consisting of two separable end walls and two separable side walls, said end walls having holding pins engageable in openings in the ivoted side frames.

16. A machine for forming pre-cast blocks of a variety of sizes and shapes, comprisinga base having spaced parallel horizontal rails, a wheeled carriage adapted to ride back and forth on said rails, a pallet-supporting table pivotally mounted on said carriage and a form mechanism adapted to overlie said pallet supporting table, said mech anism comprising a pair of pivoted side frames forming a V, and means on said mechanism for holding a form of desired size thereon and manually operated means for separating said form after a casting operation.

PAUL E. SCOTT. 

